Diễn viên Kamen_Rider_Build:_Be_The_One

  • Sento Kiryū (桐生 戦兎, Kiryū Sento): Atsuhiro Inukai (犬飼 貴丈, Inukai Atsuhiro)
  • Ryūga Banjō (万丈 龍我, Banjō Ryūga): Eiji Akaso (赤楚 衛二, Akaso Eiji)
  • Misora Isurugi (石動 美空, Isurugi Misora): Kaho Takada (高田 夏帆, Takada Kaho)
  • Kazumi Sawatari (猿渡 一海, Sawatari Kazumi): Kouhei Takeda (武田 航平, Takeda Kōhei)
  • Nariaki Utsumi (内海 成彰, Utsumi Nariaki): Yuki Ochi (越智 友己, Ochi Yūki)
  • Shinobu Katsuragi (葛城 忍, Katsuragi Shinobu): Zyouzi Kokubo (小久保 丈二, Kokubo Jōji)
  • Takumi Katsuragi (葛城 巧, Katsuragi Takumi): Yukiaki Kiyama (木山 廉彬, Kiyama Yukiaki)
  • Mitsuomi Gōbara (郷原 光臣, Gōbara Mitsuomi): Takashi Fujii (藤井 隆, Fujii Takashi)
  • Ryōka Saiga (才賀 涼香, Saiga Ryōka): Rena Matsui (松井 玲奈, Matsui Rena)
  • Yū Maihara (舞原 由宇, Maihara Yū): Koharu (呼春)
  • Arata Maihara (舞原 新汰, Maihara Arata): Shouki Tsuru (鶴 翔麒, Tsuru Shōki)
  • Citizen: Shiihashi Justaway (しいはし ジャスタウェイ, Shiihashi Jasutawei)
  • Newscaster: Saemi Ikeda (池田 沙絵美, Ikeda Saemi)
  • Weather reporter: Airi Yoshida (吉田 愛梨, Yoshida Airi)
  • Reporter: Asami Uchimura (内村 麻美, Uchimura Asami)
  • Sawa Takigawa (滝川 紗羽, Takigawa Sawa): Yukari Taki (滝 裕可里, Taki Yukari)
  • Gentoku Himuro (氷室 幻徳, Himuro Gentoku): Kensei Mikami (水上 剣星, Mikami Kensei)
  • Sōichi Isurugi (石動 惣一, Isurugi Sōichi): Yasuyuki Maekawa (前川 泰之, Maekawa Yasuyuki)
  • Kengo Inō (伊能 賢剛, Inō Kengo): Masanobu Katsumura (勝村 政信, Katsumura Masanobu)
  • Evolto (エボルト, Eboruto, Voice), Evol Driver Voice: Tetsuo Kanao (金尾 哲夫, Kanao Tetsuo)
  • Vernage (ベルナージュ, Berunāju, Voice): Sora Amamiya (雨宮 天, Amamiya Sora)
  • Kamen Rider Zi-O (仮面ライダージオウ, Kamen Raidā Jiō, Voice): So Okuno (奥野 壮, Okuno Sō)
  • Build Driver Voice: Katsuya Kobayashi (小林 克也, Kobayashi Katsuya)
  • Sclash Driver, Crocodile Crack Fullbottle, Cross-Z Magma Knuckle, và Great Cross-Z Dragon Voices: Norio Wakamoto (若本 規夫, Wakamoto Norio)
  • Ziku-Driver Equipment Voice: Rikiya Koyama (小山 力也, Koyama Rikiya), Yohei Onishi (大西 洋平, Ōnishi Yōhei)